Some are easier than others. Some need the words translating but also a bit of recoding as some recognise single-key entry; the first letter of a word.
The responses and messages also need translating and that can be problematic sometimes, with certain lengths of characters/words needed.

Adventures tend to be the games with a lot of words, so it can be very time-consuming. I tried to translate a few type-ins and found it frustrating. (But then I'm not very good with the programming and not very good at all with translation.)